Filter unit
Description
The broken lines in the drawing depict portions of the filter unit that form no part of the claimed design.
Claims
The ornamental design for a filter unit, as shown and described.
Referenced Cited
U.S. Patent Documents
D322836 | December 31, 1991 | Petrucci |
D472604 | April 1, 2003 | Fritze |
D493207 | July 20, 2004 | Ueda |
D690795 | October 1, 2013 | Reif |
D846697 | April 23, 2019 | Yoshimura |
D884637 | May 19, 2020 | Okajima |
10800666 | October 13, 2020 | Hsing |
D909606 | February 2, 2021 | Maibach, Jr. |
20040189002 | September 30, 2004 | Niemeyer |
20160310873 | October 27, 2016 | Wong |
20210138372 | May 13, 2021 | Zhibin |
Patent History
Patent number: D968558
Type: Grant
Filed: Jan 11, 2019
Date of Patent: Nov 1, 2022
Inventor: Zhibin Zou (Qingdao)
Primary Examiner: Calvin E Vansant
Application Number: 29/676,504
Type: Grant
Filed: Jan 11, 2019
Date of Patent: Nov 1, 2022
Inventor: Zhibin Zou (Qingdao)
Primary Examiner: Calvin E Vansant
Application Number: 29/676,504
Classifications